|---------------------------------------|
4 | | | ^B | | ^P | ^P | #B | |
|---------------------------------------|
3 | | | ^Kt| ^P | | ^Kt| | |
|---------------------------------------|
2 | ^P | ^P | ^P | | | | ^P | ^P |
|---------------------------------------|
1 | ^R | | ^B | ^Q | ^K | | | ^R |
---------------------------------------
A B C D E F G H


Diag. 18.

Diagram 18 shows the position which results from the following
plausible moves:

2. P-KB4 B-B4
3. Kt-KB3 P-Q3
4. B-B4 Kt-KB3
5. P-Q3 Kt-B3
6. Kt-B3 B-KKt5

If White wishes to castle on the K side, which must have been his
intention when playing 2. P-KB4, he will have to play Kt-QR4 and
KtxB.

Though this is of no disadvantage to Black, he could avoid the
exchange of his KB by playing 2. ... P-QR3 instead of B-KKt5. If
then White plays P-B5 in order to hinder the development of